Breach date: 2020-10-28. Added to this index: 2020-11-04. Accounts affected: about 3.9M. Domain: wongnai.com.
What happened
In October 2020, 17 previously undisclosed data breaches appeared for sale including the Thai restaurant, hotel and attraction finding service, Wongnai. The breach exposed almost 4M unique customer records from some time during 2020 along with names, phone numbers, links to social media profiles and passwords stored as MD5 hashes. The data was self-submitted to HIBP by Wongnai.
Breach data sourced from Have I Been Pwned, used under CC BY 4.0. Additional breach metadata provided by XposedOrNot. DataExposed is an independent service and is not affiliated with or endorsed by either.
What was exposed
Dates of birth: Your full birth date, day, month and year, collected at signup for age checks, identity verification, insurance quotes, birthday offers or government services.
Email addresses: The email address you used to register or log in. It is the most common field in breaches because it doubles as your username on most sites.
Geographic locations: A general location recorded on your account, such as a country, state, city, postcode or region, either typed in by you or estimated from your IP address.
IP addresses: The network addresses your devices used when you signed up, logged in or posted, recorded by almost every website in its access logs.
Names: Your first name, surname and sometimes middle name or initials, as you gave them when you signed up. It appears in almost every breach because nearly every account asks for it.
Passwords: The secret you use to sign in, stored by the breached service either in plain text, in a scrambled form called a hash, or encrypted. How it was stored decides how quickly it can be recovered.
Phone numbers: Your mobile or landline number, collected at signup for contact, delivery updates, marketing and two-factor codes.
Social media profiles: Usernames, profile URLs or handles for social networks such as Facebook, Instagram, X, TikTok, LinkedIn or Discord, stored alongside another account.
What to do now
Check whether your own address is in this dataset with the free email breach check.
Change the password on this service and every other site where you used the same password.
Turn on two-factor authentication on your email account first, because it is the reset path for everything else.
Treat calls and messages that quote real details about you as hostile until you verify them another way.
Frequently asked questions
What data was leaked in the Wongnai breach?
The Wongnai breach exposed Dates of birth, Email addresses, Geographic locations, IP addresses, Names, Passwords, Phone numbers, Social media profiles. About 3.9M accounts were affected.
Was I affected by the Wongnai breach?
Run the free email breach check with the address you used on that service. It will tell you whether your address appears in this dataset.
What should I do about the Wongnai breach?
Change the password on that account and everywhere you reused it, then turn on two-factor authentication. Passwords from this breach are traded and tried automatically against other sites.